Detachable setting for precious stones.



' V. L. CAPWELL. DETACHABLE SETTING FOR PRECIOUS STONES.

APPLICATION FILED MAR- 0. I915.

Patented Jan. 4, 1916;

attic cums nnrnonnnnnsnrrrne non rnnclous saronns Specification ofLetters iatent.

PatentedJan. a, 1916.

Application filed March 20, 1915. Serial No. 15,786.

7 To all whom it may concern.

Be it known that I, VERNON L. CAPWELL, a citizen of the United States,residing at Dorranceton, in the county of Luzerne and State ofPennsylvania, have inventeda new and useful Detachable Setting forPrecious Stones; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to the. art of jewelry, andparticularly to animproved detachable setting for precious stones, more especially thoseemployed in connection with finger rings, pins and the like.

An object of the invention is the provision of a setting ring havingspring or yieldable arms designed to engage the precious stone andthreaded into a threaded seat of the finger ring, there being a beveledportion adjacent the seat for forcing the arms toward the stone, therebeing locking means to prevent the setting ring from becomingaccidentally displaced.

In practical fields the details of construe-- tion may necessitatealterations, falling within the scope of what is claimed. 7

The invention comprises further features and combination of parts, ashereinafter set forth, shown in the drawings and claimed.

In the drawings: Figure 1 is a view in perspective of the improveddetachable setting as applied to a finger ring. Fig. 2 isa sectionalview through Fig. 1. Fig. 3 is an enlarged detail view of the settingring. Fig. 4: is a sectional view on line l4 of Fig. 3, showing how theedges of the nose 13 will cut or bite into the interior threads of theannular portion 2 of the ring 1, so as to hold the setting ring 5 inplace.

Referring more especially to the draw ings, 1 designates the usual formof finger ring, which may be provided with any suitable ornamentalconfiguration, but preferably as shown in the drawing the same isconstructed with an annular portion'2 disposed at right angles to thefinger ring. This annular portion is hollow, and its in terior isthreaded at 3, to be engaged by the thread 4 of the setting ring 5,which is provided with a plurality of yieldable spring to force the freeends of the arms toward the precious stone, thereby clamping the samesecurely in position. The setting ring has pivoted in a pocket 9 and anadjoining opening 10, a locking device 11, which is spring Q retained asshown at 12, and the nose 13 of this locking device is so constructed asto bite into the interior thread 3 of the annular portion in such Wiseas to prevent the setting ring against unscrewing. This biting action ofthe-nose 13 of the dogis caused, owing to the nose being rectangularincross section, and disposed as shown in Fig. 4 relative to the thread 3,in order to cause the corner edges of the nose to bite into the threads.To detach the setting ring, a very small ordelicate tool (not shown) maybe inserted partially through the setting ring, just sutliciently toengage the tail end 14: of the locking device, whereby the same bedepressed, so astocause the nose of the device to be withdrawn,subsequently to which the setting ring may be unscrewed.

The invention having been set forth, what is claimed as new and usefulis An article of jewelry comprising a finger ring having a gem holderreceiving ring provided with interior threads, a gem holder consistingof a hollow cylindrical part having upwardly and outwardly extendingyieldable arms and provided with exterior threads, to cooperate with thethreads of the holder receiving ring, said holder having a pocket in thecylindrical part and an opening adjacent said pocket, a spring-tensionedsecuring dog having a nose rectangular in cross section penetratingthrough the opening and biting into the interior threads of the holderreceiving ring, said arms having gem engaging fingers, said holderreceiving ring having an annular extension wall surname to thisspecification in the presence of rounding the lower parts (if said armsand two subscribing witnesses.v having an interior bevelec edge to been- T T gaged by the arms whereby the arms are VEPAOI CAPWVELL' 5 forcedtoward the gem as the holder is i/Vitnesses:

screwed home. M. E. DEAN,

In testimony whereof I have signed my W'. H. TURRELL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

